Model: MIL-PRF-55629/21

Circuit Breaker

Properties:

Body Style
Multipole-single actuator type
Bushing Length
0.625 inches
Body Length
2.000 inches
Body Width
1.515 inches
Case Material
Metal
Center To Center Distance Between Terminals Parallel To Length
1.530 inches
Center To Center Distance Between Terminals Parallel To Width
0.750 inches
Switch Contact Arrangement
Single pole, double throw
Fragility Factor
Rugged
Mounting Surface To Terminal End Distance
2.232 inches
Pole Quantity
2
Mounting Facility Type And Quantity
1 threaded bushing w/panel seal
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
20.0 amperes dc first location30.0 amperes dc second location
Operating Voltage Type And Rating Per Pole In Volts
50.0 dc all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
2000.0 dc all locations
Circuit Protection Type
Overcurrent all locations
Trip Release Method
Magnetic all locations
Trip Release Characteristic
Time delay all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 all locations
Reset Method
Manual
Main Contact Tripping Mechanism Type
Trip free
Manual Actuator Type And Quantity
1 toggle
Actuator Function
Reset
Actuator Position Designation
At pole two
Auxiliary Switch Function And Quantity
1 alarm
Internal Trip Release Configuration
Series trip all locations
Thread Size
0.500 inches
Switch Location And Position Designation
Internal at pole one
Trip Delay Time In Seconds Per Rated Continuous Current
2.500 at 200 pct all locations and 20.000 at 200 pct all locations
Inclosure Protection Type For Which Designed
Fungus resistant and vibration resistant and moisture resistant and shock resistant and salt spray proof and explosion resistant
Switch Terminal Type
Tab, solder lug
Switch Current Rating And Type In Amps
2.0 dc
Switch Voltage Rating And Type In Volts
50.0 dc
Test Data Document
81349-mil-c-55629 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Un
Terminal Type And Quantity
4 tab w/screw
Specification Data
81349-mil-c-55629/21 government specification
NSN
5925-01-359-9585
Part Number
MIL-PRF-55629/21
Description
Circuit Breaker
CAGE
81349

A device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. Excludes circuit breaker box and magneto "breaker" assemblies. See also switch (as modified); and controller.

Part MIL-PRF-55629/21 NSN 5925-01-359-9585

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00136
FIIG:
A030A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
EH
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536200040
  • SITC: 77252
  • End Use: Electric apparatus
  • NAICS: 335313
  • USDA: 1

Freight Class: Automatic circuit breakers, for a voltage not exceeding 1,000 v, nesoi

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